am2122-catia v5 dmu space analysis

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Means and Methods

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CATIA V5 DMU Space Analysis

Owner’s Approval: (signed)

Name : P. CanoFunction : CAD/CAM/PDM Airbus España

Airbus SAS 2002. All rights reserved. Confidential and proprietary document

Authorization: (signed)

Date : 28 Jan 2003

Name : U. Schumann-HindenbergFunction : Head of CAD/CAM Configuration

Management (EODK)

SCOPE:DMU Space Analysis, is a module dedicated to operations performed within the DIGITAL MOCK-UPenvironment. Usage thereof will allow performing measurements on minimum distances between parts in aproduct, operations with sectioning planes, detection of contacts and clashes, 3D products measurementand comparison, inertia analysis, etc.This manual is update to V5 R8.

PURPOSE:

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Table of contents

1 Foreword.................................................................................... 4

2 Setting Up a Session ................................................................ 5

2.1 Accessing the Workbench........................................................................ 5

3 Minimum Distances Between Products .................................. 6

3.1 Measuring Distances................................................................................. 6

3.2 Minimum Distance With a Defined Range (Band Analysis)................... 8

4 Sectioning.................................................................................. 9

4.1 Plane Generation ....................................................................................... 9

4.2 Editing Plane ............................................................................................ 10

4.3 Plane, Slice and Box Sections................................................................ 12

4.4 3D Cuts ..................................................................................................... 13

4.5 Sections Visualisation............................................................................. 14

5 Clash Analysis ........................................................................ 18

5.1 Part-To-Part Clash ................................................................................... 18

5.2 Clash Command....................................................................................... 19

6 Products Comparison ............................................................ 23

7 Additional Tools...................................................................... 25

7.1 Minimum Distance and Angles Measurement Between GeometricEntities or Points ..................................................................................... 25

7.2 Properties Analysis ................................................................................. 27

7.3 Arc Sections Measurement..................................................................... 29

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7.4 Inertia Analysis ........................................................................................ 30

Approval ................................................................................................................. 31

Record of revisions ............................................................................................... 31

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1 ForewordDMU Space Analysis, is a module dedicated to operations performed within the DIGITAL

MOCK-UP environment.

Usage Of this tool will allow us performing measurements on minimum distance between

parts in a product, operations with sectioning planes, detecting contacts and clashes,

measuring and comparing 3D products, inertia analysis, etc. They way it is used will be

established in the following chapters.

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2 Setting Up a Session

2.1 Accessing the Workbench

To gain access to the DMU Space Analysis select Digital Mockup →→→→ DMU SpaceAnalysis in the menu bar Start option.

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3 Minimum Distances Between ProductsYou will be able to know the minimum absolute distances between products (product is

assumed to be any component or part) or in the X, Y and Z direction in different ways:

• Inside one selection: Checks each product in the selection against all other

products in the same selection.

• Between two selections: Checks each product in the first selection against

all products in the second selection.

• Selection against all: Checks each product in the selection defined against

the other products in the document.

You will also be able to calculate and visualise the areas on products corresponding to

the minimum distance with a user defined range.Green

Red

Area in green colour on A corresponds to all points

included in A with a minimum distance with respect to B

within the minimum and maximum user defined range.

Area in red colour on A corresponds to all points included in

A with a minimum distance with respect to B shorter than

the minimum user defined distance.

3.1 Measuring DistancesExample: Measuring minimum distance between two points in two differentselections.

Select the Distance and Band Analysis icon in the tool bar. Dialog box Edit

Distance and Band Analysis will pop up. Select a product and select option Betweentwo selections, then select the second product.

Continued…

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3.1 Measuring Distances, continued

Click on Apply to calculate the distance between the selected products, a preliminary

window will pop up visualising the minimum distance (displayed by means of a line, two

crosses and a value), the dialog box expands to display results and the minimum

distance will also be visualised on the geometry area. With the result window button we

can view the result in a separate view.

Results windows

Click on OK in the dialog box Edit Distance and Band Analysis. Result becomes part

of the specification tree.

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3.2 Minimum Distance With a Defined Range (Band Analysis)Example: Band analysis between two products in the same selection.Procedure will be the same as in paragraph 3.1, after positioning on the dialog box, we

select the Band analysis type of computation, then the two products intervening in the

analysis within the same selection will be selected.

Enter the Minimum and Maximum distances to define the band width, e.g. 110 y 130 mm

and click on Apply. With the export as button you can save the Band analysis result in

*.model, *.cgr, *.VRML, *.XML, files.

Export as

Those areas coloured in green identify the areas wherein the minimum distancebetween products is within the user specified range.Those areas coloured in red identify the areas wherein the minimum distancebetween products is shorter than that specified as minimum distance.Dialog box Edit Distance and Band Analysis includes filters for better visualisation of

surfaces in red and green.

Click on OK in the dialog box Edit Distance and Band Analysis. Result becomes a part

of the specifications tree.

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4 SectioningUsing sectioning planes, you will be able to create planar sections (by means of a

plane), slice sections (limited by two planes), box sections (limited within a prism) and

also 3D section cuts on a product in an automated manner.

Sectioning is performed in a dynamic manner just manipulating the sectioning planes.

You will be able to use sections to assess clashes between products or checking

minimum distances and separate visualisation of sections in different windows for

detailed analysis.

4.1 Plane Generation

Select Insert →→→→ Sectioning from the menu bar or click on the Sectioning icon in

the tool bar.

The plane is created parallel to the plane YZ. The centre of the plane is located in the

centre of a sphere enveloping the product defined in selection. Line segments visualised

represent the intersection of the plane with the selected point.

The sectioning plane is limited and has its own local axis system identified as xyz (lower

case). Z Axis is the vector normal to the plane.

Sectioning plane referenced to the YZ plane of absolute axis

XY sectioning plane contained in the local axis system, Z is normal thereto.

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4.2 Editing PlaneThe sectioning plane or the master plane in the case of slice and box sections can be

resized, moved and rotated. When the pointer is moved over the plane, the edge of the

plane or the axis system, the auxiliary geometry will pop up, this will allow making

changes just clicking with mouse and dragging it

4.2.1 Resizing Plane

4.2.2 Moving Along the Vector Normal to the Plane

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4.2.3 Rotation

4.2.4 Moving Plane XY

All of the above operations (4.2.1 au 4.2.4) can also be performed using the Edit

Position and Dimensions icon in the tool bar.

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4.2.5 Inverting the Normal

The normal to the plane in the local axis system can be inverted, especially when certain

determined sections are to be obtained. For this purpose, select the Invert Normal

icon in the tool bar.

4.2.6 Geometrical Target

When the Geometrical Target icon is selected on the tool bar, the plane can be

located with respect to a geometrical target. A rectangle representing the plane will

appear, the plane shall be located wherein you move the pointer.

4.2.7 Resetting the Plane

Using the Reset Position icon you will be always able to go back to the initial

position of the plane.

4.3 Plane, Slice and Box Sections

Select Insert →→→→ Sectioning on the menu bar or click on the Sectioning icon in the

tool bar. Submenu in the tool bar will select the icon corresponding to the type of

sectioning.

Section Plane

Continued…

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4.3 Plane, Slice and Box Sections, continued

Section Slice

Section Box

4.4 3D Cuts

Select the Volume Cut icon in the tool bar to do a 3D cut. A 3D cut removes

material from the plane in a direction opposed to the normal, on both sides of the slice or

around the box showing the remainder of the product.

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4.5 Sections VisualisationAfter the section has been obtained in the usual manner, or editing it from the

specification tree double clicking if it existed previously, select the Results Windows

icon in the tool bar. A window will pop up displaying the front view of the section only.

The 3D visualisation tools are available in this window too. Icon Lock 2D can be

activated for the view to become 2D, also flipping and rotating the section using icons

Flip and Rotate .

Select Window →→→→ Tile Horizontally or Tile Vertically in the menu bar to arrange the

windows.

If you deactivate the Section fill icon you obtain an unfilled view.

Continued…

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4.5 Sections Visualisation, continued

When clicking on the Grid icon, a grid is added over the section, if it is desired to

change the outer size, just resize the sectioning plane.

Use the Edit Grid icon to change the spacing, style and mode of the grid. The Edit

Grid dialog box will pop up.

In the absolute mode, the grid co-ordinates are defined with respect to the absolute axis

system for the document. In the relative mode, the centre of the grid is located on the

centre of the sectioning plane. Default value for the grid spacing is 100 and style is lines.

These values can also be altered.

Clicking with the right hand side mouse button, Co-ordinates for the intersection of lines

making up the grid will be displayed, these can be set with the left hand side button. The

Clean All command deletes all positioned co-ordinates.

Continued…

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You will be able to measure minimum distances and angles; also, other properties on the

sections generated and store results of measurements and annotations. Additional tools

for these cases will be found in the Analyse option in the menu bar in the sectioning

window. It also will be possible to add 3D annotations on the section view or using the

temporary markers (Graphic Messages) and fix contents thereof if necessary.

Continued…

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You can detect collisions between 2D sections. To do so, click the Clash Detection

icon in the Sectioning Definition dialog box.

With the freeze command you can control the automatic update of the section. If you

activate this command the section is not automatically update if you move the section

plane. If you select the automatic update icon , the section automatically change

when we move the section plane.

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5 Clash AnalysisYou can analyse Clash, Contact and Clearance conflicts in documents to assess which

components interfere with others.

Depending on the needs, several levels of analysis are performed, from a simple

detection of interference between parts to a detailed clash, contact or clearance between

products or elements. Results will differ depending on the type of interference selected

for analysis

5.1 Part-To-Part Clash

Select Analyse →→→→ Part to Part Clash in the menu bar and the Clash Detection dialog

box will pop up.

• Clash (Contact + Clash) Detects areas in the parts occupying the same space

and parts in contact.

• Clearance (Clearance + Contact + Clash) Detects areas in the parts

occupying the same space and parts in contact, and parts separated in a

distance shorter than that defined as clearance.

Results will differ based on the option selected for analysis.

Select two parts in the document (CTRL), these will be shown in the dialog box.

Analysis is performed when clicking on Apply. The different results will be shown by

means of foggy lines in different colours.

• Red Clash• Yellow Contact• Green Clearance

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5.2 Clash CommandInterference check is performed in two steps.

• Initial Computation: Detects and identifies the different types of interference.

• Detailed Computation: Depending on the Clash parameters (Tools →→→→

Options →→→→ Product →→→→ DMU Clash), this calculates graphic depiction of

interference as well as depth of penetration or minimum distance

5.2.1 Initial Computation

1. Select Insert →→→→ Clash from the menu bar or click on the Clash icon in the tool

bar. Check Clash dialog box will pop up.

Default interference analysis is Contact + Clash and Between all components.

2. Types of Interference:• Contact + Clash: This checks whether two products occupy the same area in

space and whether two products are contacting (minimum distance is shorter

than tolerance).

• Clearance + Contact + Clash: This checks whether two products are

separated in a distance shorter than the one defined in Clearance in addition

to the above.

• Authorised Penetration: Lets you define a margin within which two products

can occupy the same space zone without generating a clash.

3. If the Clearance + Contact + Clash option is selected, you will have to enter the

desired value as clearance before entering the type of computation.

4. Types of Computation:• Between all components: This checks each product in the document against

all other products. This option may take a lot of computing time.

• Inside one selection: This checks each product in the selection against all

other products in the same selection.Continued…

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5.2.1 Initial Computation, continued

• Selection against all: This checks each product in the defined selection

against all other products in the document.

• Between two selections: This checks each product in the first selection

against all other products in the second selection.

5. Select products to be checked.

6. Click on Apply to check for interference. The Check Clash will expand displaying the

initial result for computations and a preliminary window displaying products in conflict

will pop up. (refer to the following paragraph).

5.2.2 Detailed Computation

1. After the initial computation has been performed and the dialog box Check Clashpopped up, results are displayed arranged by conflicts in the List by Conflict tab,

each line is one of them.

2. Default selection is the first clash in the list with the respective results of the detailed

computation. There is also a preliminary window visualising products in conflict

displaying them with different colour codes.

Continued…

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5.2.2 Detailed Computation, continued

Colour coding for conflictsClash: Curves intersection in red

Contact: Triangles in yellow

Clearance: Triangles in green

This preliminary window allows rotating, moving andzooming for better interference visualisation.Results can also be visualised in a dedicated window

using the Result Windows icon

Whenever a conflict is selected from the list, the detailed computation for the

interference is started, values for columns Value and Status as well as contents in the

preliminary window are updated.

3. Results can be filtered in the dialog box by selecting the different tabs.

• Type of interference: Clash, Contact o Clearance.

• Value: no filter, increasing value o decreasing value. Penetration depth for a

Clash, minimum distance for a Clearance and 0 for a contact are reported in

the Value block.

• Penetration depth is the minimum distance necessary to translate a product to

prevent a Clash.

• Status: all, no inspected, relevant, irrelevant. All interference are shown as

not inspected until a conflict has been selected. An Inspected interference can

be relevant or irrelevant.

• Info: (available when results are compared): old, new, modify.

Do not forget clicking on the Apply Filters to update results4. To change an inspected conflict Status, click on the Status field of that conflict. The

change can be from relevant to irrelevant and vice versa, depending on the initial

value.

5. Click on the Comment field to add comments to a conflict and the dialog box to enter

them will pop up.

Continued…

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5.2.2 Detailed Computation, continued

6. If the List by Product tab is selected, conflicts associated to products are displayed.

There may be more than a conflict per product. When clicking on the More button in

the dialog box, we will get additional information on the products and elements

involved in the conflict.

7. Use the Export as icon to generate a text (txt, xml, model) file output.

1 35-46613-1001-SPC-1-1-1.1 35-46613-1101-SPC-1-1-1.1 Clash -4,62 Relevant2 35-46613-1001-SPC-1-1-1.1 95-46785-0101-SPC-1-1-1.1 Clash -68,76 Relevant3 35-46613-1101-SPC-1-1-1.1 35-46628-0201-SPC-1-1-1.1 Clearance 0,81 Relevant4 35-46613-1101-SPC-1-1-1.1 95-46785-0101-SPC-1-1-1.1 Contact 0 Relevant5 35-46626-0101-SPC-1-1-1.1 95-46781-0101-SPC-1-1-1.1 Contact 0 Relevant6 35-46628-0201-SPC-1-1-1.1 35-46712-0501-SPC-1-1-1.1 Clearance 5 Relevant7 35-46628-0201-SPC-1-1-1.1 35-46712-0601-SPC-1-1-1.1 Contact 0 Irrelevant8 35-46712-0501-SPC-1-1-1.1 35-46712-0601-SPC-1-1-1.1 Clash -0,14 Relevant9 35-46712-0501-SPC-1-1-1.1 95-46791-0101-SPC-1-1-1.1 Clearance 0,63 Relevant10 95-46781-0101-SPC-1-1-1.1 95-46781-0201-SPC-1-1-1.1 Contact 0 Relevant

8. Click on OK to leave. Definition and result are saved in the specifications tree.

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6 Products ComparisonTwo products can be compared to detect differences between each other and assess

those areas where material has been removed or added.

Products can be compared referenced to the absolute axis system for the document or

the local axis system.

Example below shows a rib on which several modifications have been performed, Web

length has been increased, a hole has been cut.

Products to be compared must be in the same CATProduct document.

Click on the Compare Products icon in the tool bar. Dialog box Compare

Products will pop up

Continued…

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6 Products Comparison, continued

Select products intended to be compared (Old and New Version). Enter an accuracyvalue for precision computation, default value is 5 mm. If a small value is entered for the

accuracy, computation precision will be higher, but execution time will be greatly

increased. Display accuracy differs from the Computation accuracy and allows a

larger graphic visualisation of results.

Select the type of comparison intended to be performed

• Added + removed

• Added

• Removed

Results will be displayed in a window. Differences are shown by means of cubes.

Material added is shown in red and material removed in green.

If the DMU Optimizer license is available, results (cubes) can be saved in 3dmap format,

Save as dialog box will be displayed when clicking on OK.The 3dmap format can be inserted within a product and run commands from other

modules such as the DMU Space Analysis (Clash or sectioning) or DMU Navigator

(Proximity Query).

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7 Additional ToolsDMU Space Analysis is provided with an additional number of tools. These tools allow

measuring the minimum distance and angles between two geometric entities or points,

associated properties, arc sections and inertia moments, density and mass.

7.1 Minimum Distance and Angles Measurement Between GeometricEntities or Points

This function cannot be used on cgr (visualization format, approximate geometry) files as

selection of individual vertices, elements or surfaces is not allowed. Likewise, it happens

the same if the document is in the visualisation mode. Mode has to be changed to

Design (Edit →→→→ Representations →→→→ Design Mode) to be able to select entities

1. Select Analyse →→→→ Measure Between in the menu bar or the Measure Between

icon in the tool bar. The Measure Between dialog box and the Measure tool bar will

pop up.Access to the Measureitem command

Only in a P1 configuration.

• Measure Dialogs : This allows displaying or hiding the associated dialog

box.

• Exit Measure : This allows exiting the function.

2. Select the type of measurement to be performed:

Continued…

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7.1 Minimum Distance and Angles Measurement Between GeometricEntities or Points, continued

• Between: This measures distances and angles between a reference point anda target point.

• Chain: This takes the target point as reference for the following measurement.• Fan: This sets the selected point as fixed reference for the remaining

measurements.

3. Define the measurement mode for reference and target

• Any geometry: Distances and angles between defined geometric entities(points, edges, surfaces, …).

• Any geometry, infinite: Distances and angles between flat facets laid oninfinite planes and straight line segments laid on infinite lines.

• Point on geometry: Distance between selected points on defined geometricentities.

• Point only: Distances between points.• Edge only, Surface only: Distances and angles between edges and surfaces

respectively.• Intersection: Distance between an edge and a surface.• Edge limits: Distances between points ends and mid points on an edge.• Arc centre: Distances between arc centres.• Co-ordinate: Distance between input co-ordinates for the target and/or

reference points.

4. When measuring, the pointer changes its shape showing an additional number, 1 for

the reference point and 2 for the target point. A line represents the minimum distance

vector and the values will be displayed in the dialog box

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7.2 Properties AnalysisThis function cannot be used on cgr files as selection of individual vertices, elements or

surfaces is not allowed. Likewise, it happens the same if the document is in the

visualisation mode, mode has to be changed to Design (Edit →→→→ Representations →→→→

Design Mode) to be able to select entities.

Select Analyze →→→→ Measure Item in the menu bar or the Measure Item icon in the

tool bar. Dialog box Measure Item and tool bar Measure will pop up.

Only in P1 configuration


box.


If button Customize is clicked on the dialog box the type of analysis

intended to be performed can be selected.

The different types of analysis associated to each element can be

selected from the following customizing panel.

The dialog box will report a different result depending on the element selected.Continued…

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7.2 Properties Analysis, continued

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7.3 Arc Sections Measurement

Select the Arc through Three Points icon in the tool bar or Analyze →→→→ Arc

through Three Points in the menu bar. The Measure Arc Section dialog box and the

Measure tool bar will pop up.

Only in P1 configuration


box.


Select three points along a curve or on an arc. Pointer shape will change showing the

type of measurement we are performing, a number will let us know the measurement

step we are in (1, 2 y 3).

The dialog box is updated, providing information about the length, angle and arc radius

or diameter as well as the co-ordinates for the initial, mid and final points.

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7.4 Inertia Analysis

Select the Measure Inertia icon in the tool bar or select Analyze →→→→ Measure Inertia

from the menu bar. The Measure Inertia dialog box will pop up:

Clicking on the Customize button will allow selection of the type of analysis intended to

be performed.

If any element is selected on the document, after the computation time has elapsed, the

Measure Inertia dialog box expands showing results of analysis.

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Approval

This document has been approved by:

(signatures or proof of agreement are archived together with the master document)

Function/Organization Approval/Name

ACE/SPD/Cax Technology/Method Pedro-Jesus Cano-Rodriguez

ACE/SPD/A-C Process/DMU Construction Emmanuel Pere

EAQ D. Olsen

SPD ACE E. Le-Floch

Record of revisions

Issue Date Summary and reasons for changesA Dec 2002 Initial issue

If you have a query concerning the implementation or updating of this document,please contact the Owner on page 1

or the following:

Team members Company/Department TelephoneF. Kautz Airbus Deutschland 49 421 538 3704B. Maitre EMKT 33 61 18 61 04JA. Jurado Airbus España 34 91 624 1292M. Horwood Airbus UK 0117 936 5081

For general queries or information contact:

Airbus Documentation Office,Airbus,

31707 Blagnac CEDEX,France

Tel: 33 (0)5 61 93 49 93Fax: 33 (0)5 61 93 27 44

am2122-catia v5 dmu space analysis

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defined geometric